Door-check.



"no. 629,248. Patented Jul I8, I899.

' c. r. HANINGTON.

DOOR CHECK.

(Appliuzion filed Oct. 28. 1898. (No Modal.)

4 live/12g)" 5"? all M -UNITED STATES- PATENT 7 OFFICE.

CHARLES HANiNeToN, or, New YORK, n. ASSiGNOR To run MECHANICAL noon HINGE CHECK COMPANY, or SAME PLACE.

oooR-lo'HEci srnorrrcarron forming part of Letters Patent No. 629,248, dated July s, 1899.

' Application filetl October 28, 1898. Serial No. 694,786. (K0 model.)

To all whom it may concern: j

Be'it known that I, CHARLES F. HANINGTON, a citizen ofthe United States, residing in the borough of Manhattan, in the city, county, and State of New York, have invented certain new and useful Improvements in Mechanical Door-Checks, of which the following is a specification.

My invention relates to various new and use ful improvements in mechanical door-checks; and the object of the invention is to simplify the construction and improve the operation of such devices. In carrying out my invention I provide a hinge of any suitable type having twoleaves and a barrel and combine therewith mechanical checking devices which will be simple in constructiomefiective in operation, durable in use, 'capable'of beingeasily reached for purposes of repair, and wherein when desired the checking action may be discontinued.

The type or device to which myinvention particularly relates is that shown and de scribed in my application for LettersPatent filed October 19, 1898, Serial No. 693,980, and the present improvements are designed to simplify the construction and improve the operation of that device. The present invention covers only specific improvements on the device claimed in said application, and so much of the invention of said application as is necessary for a complete understanding of the presentimprovements is'described, but not claimed herein. f U

In order that my invention may be better understood, attention is directed to the accompanying drawings, forming part .of this specification, and in which- I 4 Figure 1 is a side elevation, partly in section,.of an ordinary door-hinge equipped with my present invention, the hinge being IGQI'Q" sented in a closed position; Fig. 2, a similarview showing the'two leaves separated at an angle of ninety degrees; Fig. 3, a horizontal sectional'view on the line 3 3 of Fig. 1; showing the position of the'hinge when the door is entirelyopen; and Fig. 4, a view similar to Fig. 3,:illustrating'the position of the parts when the hinge has been closed to the checking positioni In all of the above views corresponding parts are represented by the same numerals'of reference. a

1 is a hingebarrel, and '2 3 are the two leaves. One of such leaves is secured to the frame of the door way or jamb and the other leaf is se= cured to the door. In the drawings I illus trate the barrel 1 as being carried by the leaf 3, and I illustrate the leaf 2 as being pivoted on the ordinary pintle 3, which is mounted in said barrel. Carried by the barrel is the sleeve 4, in which is formed aslot5, at the end of which slot is a shoulder 6, upon which is imposed the checking thrust or strain. The collar 4 is secured to the pintle or barrel in any suitable way,as by screws '7; Extending parallel with the slot 5, above the shoulder 6,

is a shorter slot 8, which communicates with the slot 5 and is provided above and infront of the shoulder 6 with a curved cam-surface 7o 9. It will be understood that instead of providing a collar securedto the pintle or barrel, said collar carrying a shoulder 6 and a camsurface 9, it will be possible to make use of a separate shoulder 6 anda separate cam-surface 9, secured independently to the pintle or barrel, as I have described in my said application. Adapted to work in the slots 5 and S is a checking-pawl 10, which in this instance is carried on the leaf 2, within a recess 11 in said leaf and upon a sufficiently heavy screw 12., Secured to the leaf 2 and in engagement with the checking-pawl 10 is a checking-spring 13, which in this instance is a leaf-spring secured to said leaf; by the screws 14 and 15, the latter working in a slotted opening 17, sov as to allow for slight movement of said spring when the latter is bowed at its center. The checking-pawl 10 is. capable of movement within the recess 11 and parallel with the go spring 1 3. Said checking-pawl is alsooapabio of movement outward from the hinge-leaf 2 against the tension of the spring 13, to allow of which movement the said checking-pawl 1O is somewhat loosely mounted on the pivot 12,

7 my application,I prefer to make use of a pose of elevating the checking-pawl 10 after. the same has been tripped, as will be explained, I prefer to makeuse of a spiral spring 18, located. in a recess 19 in the hingeleaf 2 andmounted between lugs 20 21, formed separate small locking-dog pivoted to the hingeleaf 2, as in this way I am not required to weaken the checkingpawl in any way, and the device will be somewhat simplified. This locking-dog 22 is preferably mounted in a kerf or slot. 23, formed in the leaf 2, and is on either side of its pivot.

cast with said leaf or secured thereto.

pivotedon a stud 24-,mounted on asmall lug 25, The said locking-dogis provided with a latch-head 26, which preferably engages over the upper surface of the checking-pawl to hold said checking-pawl normally in a depressed posi- 'tion. 'Obviously the said latch-head of the locking-dog may engage with a recess formed on the inner surface of said checking-pawl instead of above the latter. The inner end of the locking-dog projeotswithin the barrel 1 and is adapted to be struck at the proper moment to release the latch-head thereof from the checking-pawl and allow the latter to be moved upward by the spring 18. In order to keep the latch-head of the locking-dog normally in engagement with the checking-pawl to lock the latter downward, I prefer to make use of a leaf-spring 27, pivoted to the leaf 2 and adapted to engage with the locking-dog In this way the spring 27 may be employed to keep the locking-dogin a normally-locked or in a normallyunlocked position, for reasons which I will explain. In order to trip the locking-dog at the proper moment, I make use of a supplemental shoulder 28, formed in the collar 4 and so located relatively to the shoulder 6 that the free end of the locking-dog will be engaged thereby an instant before said shoulder strikes the end of the checking-pawl.

The operation of the device is as follows: Normally the inner end of the checking-pawl 10 will work in the slot 5, the said pawl being locked in a depressed position against the tension of the spring 18 by the engagement of the latch-head 26 with the said checkingpawl. When the door is closed by hand or by a suitable spring device, the two leaves 2 and 3 will be moved almost together, so as to first engage the auxiliary shoulder 28 with the free end of the locking-dog to disengage the latch-head thereof from the checking-pawl. Before the spring 18 can force the checkingpawl 10 upward into the slot .8 the rear end of the checking pawl 'lO'will' have been engaged by the shoulder G, and the friction thus produced between these parts will prevent upward movement of the pawl. This engagement between the inner end of the checkingpawl and the shoulder 6 takes place immediately before the door is closed, and the'strain will be thus thrown upon the checking-spring '13, which will be caused to buckle outward at its center under the slight movement of the V cheeking-pawlagainstthespring. 'Anel'a-stic checking action is thus secured. During this checking operation the'auxiliar'y shoulder 28 is still in engagement with the free end of the looking-dog and has simply moved the latter on its pivot against the tension of the spring 27. If necessary, the leaf 3 may be cut away at 29 to accommodate this movement of the locking-dog. W'hen the door has rebounded, the inner end of the checking-pawl 10 will be friction between the two, and the spring 18 will thus immediately elevate the said pawl and cause its inner end to'work inthe slot 8 to thus allow the leaves to engage together, as

shown in Fig. 1, and to permit the door to close. When the door is reopened, the inner end of the checkingpawl will engage the cam surface 9, and said pawl will be moved downward into the slot 5; Immediately thereafter the latch-head of the locking-dogwill engage over the checking-pawl 10 to hold the latter in its depressed normal position; IVh'en it is take place, the leaf-spring 27 is moved across the pivot 24 of the locking-dog, so as to hold the free end thereof normally depressed and to thereby retract the locking-head from engagement with the checking-pawl. When this is done, it will be seen that when the door closes there will be no engagement between the pawl 10 and the shoulder 6, since the spring 18 will have elevated the pawl into can take place.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

1. In a door-check, the combination of the stationary and movable hinge-leaves, a barrel carried by the movable leaf, a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to be engaged by said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring for resisting said movement, whereby an elastic checking disengaged from the'shoulder 6 to relieve the loo desired that the checking action should not line with the slot 8 before such engagement re], a shoulder connected to one leaf, a checking-pawl carried by the other leaf and adapted to engage said shoulder before the door-is closed, a checking-spring for receiving the impact of the engagement between said she ulder and pawl, and a locking-dog carried by the leaf and normally locking said pawl in a position to engage the shoulder, substantially as set forth.

3. In a door-cheek, the combination of the two hinge-leaves, one of which carries a barrel, a shoulder connected to one'leaf, a checking-pawl carried by the other leaf and adapted to engage said shoulder before the door'is closed, a checking-spring for receiving the impact of the engagement between said-shoulder and paw], a locking-dog carried by the leaf and normally locking said pawl in a position to engage the shoulder, and means for releasing said locking-dog when the pawl engages the shoulder,whereby upon the rebound the pawl will he moved out of its engagement with the shoulder to allow the closing of the door, substantially as set forth.

4. In a door-check, the combination of the two hinge-leaves, one of which carries a barrel, a shoulder connectedto one leaf, a checking-pawl carried by the other leaf and adapt: ed to engage said shoulder before the door is closed, a checking-spring for receiving the impact of the engagement between said shoulder and paw], a locking-dog carried by the leaf and normally locking said pawl in a position to engage-the shoulder, meansfor releasingsaid locking-dog when the pawl engages .the shoulder, whereby upon the rev bound the pawl will be moved out of its en' gagement with the shoulder to allow the closing of the door, and means for automatically resetting the pawl and for resetting the locking-dog, substantially as set forth! 5. In a door-check, the combination of the two hinge-leaves, one of which carries a bar= rel, a should er connected to one leaf, a checking-pawl carried by the other leaf and adapted to .en gage said shoulder before the door is closed, a checking-spring for receiving theing-pawl carried by the other leaf and adapted to engage said shoulder before the door is closed, a checking-spring forfreceiving the impact'of the engagement between said shoulder and pawl, a locking-dog carried by said leaf and normally locking said pawl in a position to engage the shoulder, and a spring for maintaining said locking-dog in either a normally locked or unlocked position, sub stantially as set forth..

This specification signed and witnessed this 25th. day of October, 1898.

- CHARLES F. HANINGTON. Witnesses:

JNo. R. TAYLOR,

ARCHIE G. Rnnsn. 

